Sound level is VERY LOW while recording video.Also, if autofocus and/or optical zoom is ON during video recording, you can hear multiple clicks during all video clip and sound level is also very low (but sound level of clicks is HIGH).This camera was bought as the second camera in addition to my SLR for video recording and everyday/everywhere use.

PENTAX says that it is NOT A LACK or DEFECT, it is a FEATURE of this model. ("High quality video with sound" by PENTAX!!!)